package lab02.test32;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by Administrator on 2017/11/9.
 */
public class Test {

    public static void main(String[] args) {

        Map<String,String> map = new HashMap<>();

        //id—>"1"、name—>"张三"、gender—>"男"、 age—>"25"、love—>"爱学Java"
        map.put("id","1");
        map.put("name","张三");
        map.put("gender","男");
        map.put("age","25");
        map.put("love","爱学Java");
       //遍历一个map
    for (Map.Entry<String,String>entry : map.entrySet()){

        System.out.println(entry.getKey());
        System.out.println(entry.getValue());

    }

        System.out.println("集合大小：" + map.size());

        //删除集合中的键为age的元素
        for (Map.Entry<String,String>entry : map.entrySet()){

            if (entry.getKey().equals("age")){

                map.remove(entry.getKey());
            }
        }

        System.out.println("集合大小：" + map.size());
    }

}
